The utility model relates to the technical field of new energy vehicles, in particular to a fire-resistant wiring harness of a charging pile for new energy vehicles.

Background technique:
With the development of technology, new energy vehicles are the current development trend. Among new energy vehicles, the charging technology for new energy vehicles is very important for new energy vehicles. At present, new energy vehicles are usually charged through new energy vehicle charging piles, but because the new energy vehicle charging piles are unguarded and exposed to the external environment. Once the current power exceeds the rated value, it is easy to cause the new energy vehicle charging pile harness to overheat or even catch fire. The wiring harnesses of the existing charging piles for new energy vehicles usually have limited fire resistance and are prone to danger. Therefore, it is necessary to provide a wire harness for a new energy vehicle charging pile to solve the above-mentioned problems.

Technical realization elements:
The new technology is to provide a wire harness for a new energy vehicle charging pile to solve the problem that the existing car charging pile wiring harness usually has limited fire resistance and is prone to danger.

The utility model provides a wiring harness for an automobile charging pile, which includes: A plurality of twisted sub-wire bundles, a copper wire braid layer arranged outside the plurality of sub-wire bundles, and a polyvinyl chloride layer wrapped outside the copper wire braid layer; The sub-wiring bundle includes a copper wire and an aramid refractory fiber layer wrapped around the copper wire. A polyethylene layer wrapped outside the aramid refractory fiber layer, a non-woven fabric layer wrapped outside the polyethylene layer, and a tin-plated copper wire layer wrapped outside the non-woven fabric layer; Aramid fiber filler is filled inside the copper wire braided layer and between the several sub-wiring bundles; The thickness of the aramid refractory fiber layer is half of the thickness of the polyethylene layer. The thickness of the polyethylene layer is equal to the thickness of the non-woven fabric layer. The thickness of the tinned copper wire layer is one third of the thickness of the non-woven fabric layer; The thickness of the polyvinyl chloride layer is twice the thickness of the copper wire braided layer.


The aramid fiber filler includes para-aramid.
The number of the sub-wiring harness is two.
The advantages and effects of the utility model are:

The wiring harness of the new-type new energy vehicle charging pile includes: Several twisted sub-wiring bundles, a copper wire braiding layer arranged on the outside of the several sub-wiring bundles, and a polyvinyl chloride layer wrapped on the outside of the copper wire braiding layer; The sub-wiring harness includes a copper wire, an aramid refractory fiber layer wrapped around the copper wire, The polyethylene layer wrapped around the aramid refractory fiber layer, The non-woven fabric layer wrapped around the polyethylene layer,
Tinned copper wire layer wrapped around the non-woven fabric layer; Aramid fiber filler is filled inside the braided layer of copper wire and between several sub-wiring bundles; The thickness of the aramid refractory fiber layer is one-half of the thickness of the polyethylene layer, the thickness of the polyethylene layer is equal to the thickness of the non-woven fabric layer, and the thickness of the tinned copper wire layer is one-third of the thickness of the non-woven fabric layer; The thickness of the PVC layer is twice the thickness of the copper wire braid; The fire resistance is good, which can prevent the wiring harness of the new energy vehicle charging pile from overheating, and even the dangerous situation of fire.

Description of the drawings
The following describes the utility model in further detail with reference to the accompanying drawings:
Figure 1, a schematic cross-sectional view of a new type of new energy vehicle charging pile wiring harness;

In the picture:
Copper wire 1, Aramid refractory fiber layer 2, Polyethylene layer 3. Non-woven fabric layer 4. Tinned copper wire layer 5. Aramid fiber filler 6. Copper wire braid 7. PVC layer 8. Sub-wiring harness 9.

Newly provide a new energy vehicle charging pile wiring harness, including: Several sub-wire bundles 9 twisted together, a copper wire braided layer 7 arranged outside the several sub-wire bundles 9, and a polyvinyl chloride layer 8 wrapped outside the copper wire braided layer 7; The sub-wiring harness 9 includes copper wire 1, The aramid refractory fiber layer 2 wrapped on the outside of the copper wire 1, the polyethylene layer 3 wrapped on the outside of the aramid refractory fiber layer 2, The non-woven fabric layer 4 wrapped on the outside of the polyethylene layer 3, The tinned copper wire layer 5 wrapped around the non-woven fabric layer 4; Inside the copper wire braided layer 7, Aramid fiber filler 6 is filled between the several sub-wiring bundles; The thickness of the aramid refractory fiber layer 2 is one-half of the thickness of the polyethylene layer 3, The thickness of the polyethylene layer 3 is equal to the thickness of the non-woven fabric layer 4, The thickness of the tinned copper wire layer 5 is one third of the thickness of the non-woven fabric layer 4; The thickness of the polyvinyl chloride layer 8 is twice the thickness of the copper wire braided layer 7. The aramid fiber filler 6 includes para-aramid. The number of the sub-wiring harness 9 is two. The new energy vehicle charging pile wiring harness of the present invention is provided with an aramid refractory fiber layer 2 and an aramid fiber filler 6. The new energy vehicle charging pile wiring harness has better fire resistance, which can prevent the new energy vehicle charging pile wiring harness from overheating and even dangerous situations of fire.